OpenWrt – Rev 4
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From 780865643e5dbf41fe950924a68f7ee4fea8af3e Mon Sep 17 00:00:00 2001
From: Biwen Li <biwen.li@nxp.com>
Date: Tue, 30 Oct 2018 18:26:39 +0800
Subject: [PATCH 30/40] ifc-nor-nand: support layerscape
This is an integrated patch of ifc-nor-nand for
layerscape
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Signed-off-by: Raghav Dogra <raghav.dogra@nxp.com>
Signed-off-by: Biwen Li <biwen.li@nxp.com>
---
drivers/memory/fsl_ifc.c | 263 +++++++++++++++++++++++++++++
drivers/mtd/maps/physmap_of_core.c | 4 +
include/linux/fsl_ifc.h | 7 +
3 files changed, 274 insertions(+)
--- a/drivers/memory/fsl_ifc.c
+++ b/drivers/memory/fsl_ifc.c
@@ -24,6 +24,7 @@
#include <linux/compiler.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
+#include <linux/delay.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/io.h>
@@ -37,6 +38,8 @@
struct fsl_ifc_ctrl *fsl_ifc_ctrl_dev;
EXPORT_SYMBOL(fsl_ifc_ctrl_dev);
+#define FSL_IFC_V1_3_0 0x01030000
+#define IFC_TIMEOUT_MSECS 1000 /* 1000ms */
/*
* convert_ifc_address - convert the base address
@@ -311,6 +314,261 @@ err:
return ret;
}
+#ifdef CONFIG_PM_SLEEP
+/* save ifc registers */
+static int fsl_ifc_suspend(struct device *dev)
+{
+ struct fsl_ifc_ctrl *ctrl = dev_get_drvdata(dev);
+ struct fsl_ifc_global __iomem *fcm = ctrl->gregs;
+ struct fsl_ifc_runtime __iomem *runtime = ctrl->rregs;
+ __be32 nand_evter_intr_en, cm_evter_intr_en, nor_evter_intr_en,
+ gpcm_evter_intr_en;
+ uint32_t ifc_bank, i;
+
+ ctrl->saved_gregs = kzalloc(sizeof(struct fsl_ifc_global), GFP_KERNEL);
+ if (!ctrl->saved_gregs)
+ return -ENOMEM;
+ ctrl->saved_rregs = kzalloc(sizeof(struct fsl_ifc_runtime), GFP_KERNEL);
+ if (!ctrl->saved_rregs)
+ return -ENOMEM;
+
+ cm_evter_intr_en = ifc_in32(&fcm->cm_evter_intr_en);
+ nand_evter_intr_en = ifc_in32(&runtime->ifc_nand.nand_evter_intr_en);
+ nor_evter_intr_en = ifc_in32(&runtime->ifc_nor.nor_evter_intr_en);
+ gpcm_evter_intr_en = ifc_in32(&runtime->ifc_gpcm.gpcm_evter_intr_en);
+
+/* IFC interrupts disabled */
+
+ ifc_out32(0x0, &fcm->cm_evter_intr_en);
+ ifc_out32(0x0, &runtime->ifc_nand.nand_evter_intr_en);
+ ifc_out32(0x0, &runtime->ifc_nor.nor_evter_intr_en);
+ ifc_out32(0x0, &runtime->ifc_gpcm.gpcm_evter_intr_en);
+
+ if (ctrl->saved_gregs) {
+ for (ifc_bank = 0; ifc_bank < FSL_IFC_BANK_COUNT; ifc_bank++) {
+ ctrl->saved_gregs->cspr_cs[ifc_bank].cspr_ext =
+ ifc_in32(&fcm->cspr_cs[ifc_bank].cspr_ext);
+ ctrl->saved_gregs->cspr_cs[ifc_bank].cspr =
+ ifc_in32(&fcm->cspr_cs[ifc_bank].cspr);
+ ctrl->saved_gregs->amask_cs[ifc_bank].amask =
+ ifc_in32(&fcm->amask_cs[ifc_bank].amask);
+ ctrl->saved_gregs->csor_cs[ifc_bank].csor_ext =
+ ifc_in32(&fcm->csor_cs[ifc_bank].csor_ext);
+ ctrl->saved_gregs->csor_cs[ifc_bank].csor =
+ ifc_in32(&fcm->csor_cs[ifc_bank].csor);
+ for (i = 0; i < 4; i++) {
+ ctrl->saved_gregs->ftim_cs[ifc_bank].ftim[i] =
+ ifc_in32(
+ &fcm->ftim_cs[ifc_bank].ftim[i]);
+ }
+ }
+
+ ctrl->saved_gregs->rb_map = ifc_in32(&fcm->rb_map);
+ ctrl->saved_gregs->wb_map = ifc_in32(&fcm->wb_map);
+ ctrl->saved_gregs->ifc_gcr = ifc_in32(&fcm->ifc_gcr);
+ ctrl->saved_gregs->ddr_ccr_low = ifc_in32(&fcm->ddr_ccr_low);
+ ctrl->saved_gregs->cm_evter_en = ifc_in32(&fcm->cm_evter_en);
+ }
+
+ if (ctrl->saved_rregs) {
+ /* IFC controller NAND machine registers */
+ ctrl->saved_rregs->ifc_nand.ncfgr =
+ ifc_in32(&runtime->ifc_nand.ncfgr);
+ ctrl->saved_rregs->ifc_nand.nand_fcr0 =
+ ifc_in32(&runtime->ifc_nand.nand_fcr0);
+ ctrl->saved_rregs->ifc_nand.nand_fcr1 =
+ ifc_in32(&runtime->ifc_nand.nand_fcr1);
+ ctrl->saved_rregs->ifc_nand.row0 =
+ ifc_in32(&runtime->ifc_nand.row0);
+ ctrl->saved_rregs->ifc_nand.row1 =
+ ifc_in32(&runtime->ifc_nand.row1);
+ ctrl->saved_rregs->ifc_nand.col0 =
+ ifc_in32(&runtime->ifc_nand.col0);
+ ctrl->saved_rregs->ifc_nand.col1 =
+ ifc_in32(&runtime->ifc_nand.col1);
+ ctrl->saved_rregs->ifc_nand.row2 =
+ ifc_in32(&runtime->ifc_nand.row2);
+ ctrl->saved_rregs->ifc_nand.col2 =
+ ifc_in32(&runtime->ifc_nand.col2);
+ ctrl->saved_rregs->ifc_nand.row3 =
+ ifc_in32(&runtime->ifc_nand.row3);
+ ctrl->saved_rregs->ifc_nand.col3 =
+ ifc_in32(&runtime->ifc_nand.col3);
+
+ ctrl->saved_rregs->ifc_nand.nand_fbcr =
+ ifc_in32(&runtime->ifc_nand.nand_fbcr);
+ ctrl->saved_rregs->ifc_nand.nand_fir0 =
+ ifc_in32(&runtime->ifc_nand.nand_fir0);
+ ctrl->saved_rregs->ifc_nand.nand_fir1 =
+ ifc_in32(&runtime->ifc_nand.nand_fir1);
+ ctrl->saved_rregs->ifc_nand.nand_fir2 =
+ ifc_in32(&runtime->ifc_nand.nand_fir2);
+ ctrl->saved_rregs->ifc_nand.nand_csel =
+ ifc_in32(&runtime->ifc_nand.nand_csel);
+ ctrl->saved_rregs->ifc_nand.nandseq_strt =
+ ifc_in32(
+ &runtime->ifc_nand.nandseq_strt);
+ ctrl->saved_rregs->ifc_nand.nand_evter_en =
+ ifc_in32(
+ &runtime->ifc_nand.nand_evter_en);
+ ctrl->saved_rregs->ifc_nand.nanndcr =
+ ifc_in32(&runtime->ifc_nand.nanndcr);
+ ctrl->saved_rregs->ifc_nand.nand_dll_lowcfg0 =
+ ifc_in32(
+ &runtime->ifc_nand.nand_dll_lowcfg0);
+ ctrl->saved_rregs->ifc_nand.nand_dll_lowcfg1 =
+ ifc_in32(
+ &runtime->ifc_nand.nand_dll_lowcfg1);
+
+ /* IFC controller NOR machine registers */
+ ctrl->saved_rregs->ifc_nor.nor_evter_en =
+ ifc_in32(
+ &runtime->ifc_nor.nor_evter_en);
+ ctrl->saved_rregs->ifc_nor.norcr =
+ ifc_in32(&runtime->ifc_nor.norcr);
+
+ /* IFC controller GPCM Machine registers */
+ ctrl->saved_rregs->ifc_gpcm.gpcm_evter_en =
+ ifc_in32(
+ &runtime->ifc_gpcm.gpcm_evter_en);
+ }
+
+/* save the interrupt values */
+ ctrl->saved_gregs->cm_evter_intr_en = cm_evter_intr_en;
+ ctrl->saved_rregs->ifc_nand.nand_evter_intr_en = nand_evter_intr_en;
+ ctrl->saved_rregs->ifc_nor.nor_evter_intr_en = nor_evter_intr_en;
+ ctrl->saved_rregs->ifc_gpcm.gpcm_evter_intr_en = gpcm_evter_intr_en;
+
+ return 0;
+}
+
+/* restore ifc registers */
+static int fsl_ifc_resume(struct device *dev)
+{
+ struct fsl_ifc_ctrl *ctrl = dev_get_drvdata(dev);
+ struct fsl_ifc_global __iomem *fcm = ctrl->gregs;
+ struct fsl_ifc_runtime __iomem *runtime = ctrl->rregs;
+ struct fsl_ifc_global *savd_gregs = ctrl->saved_gregs;
+ struct fsl_ifc_runtime *savd_rregs = ctrl->saved_rregs;
+ uint32_t ver = 0, ncfgr, timeout, ifc_bank, i;
+
+/*
+ * IFC interrupts disabled
+ */
+ ifc_out32(0x0, &fcm->cm_evter_intr_en);
+ ifc_out32(0x0, &runtime->ifc_nand.nand_evter_intr_en);
+ ifc_out32(0x0, &runtime->ifc_nor.nor_evter_intr_en);
+ ifc_out32(0x0, &runtime->ifc_gpcm.gpcm_evter_intr_en);
+
+
+ if (ctrl->saved_gregs) {
+ for (ifc_bank = 0; ifc_bank < FSL_IFC_BANK_COUNT; ifc_bank++) {
+ ifc_out32(savd_gregs->cspr_cs[ifc_bank].cspr_ext,
+ &fcm->cspr_cs[ifc_bank].cspr_ext);
+ ifc_out32(savd_gregs->cspr_cs[ifc_bank].cspr,
+ &fcm->cspr_cs[ifc_bank].cspr);
+ ifc_out32(savd_gregs->amask_cs[ifc_bank].amask,
+ &fcm->amask_cs[ifc_bank].amask);
+ ifc_out32(savd_gregs->csor_cs[ifc_bank].csor_ext,
+ &fcm->csor_cs[ifc_bank].csor_ext);
+ ifc_out32(savd_gregs->csor_cs[ifc_bank].csor,
+ &fcm->csor_cs[ifc_bank].csor);
+ for (i = 0; i < 4; i++) {
+ ifc_out32(savd_gregs->ftim_cs[ifc_bank].ftim[i],
+ &fcm->ftim_cs[ifc_bank].ftim[i]);
+ }
+ }
+ ifc_out32(savd_gregs->rb_map, &fcm->rb_map);
+ ifc_out32(savd_gregs->wb_map, &fcm->wb_map);
+ ifc_out32(savd_gregs->ifc_gcr, &fcm->ifc_gcr);
+ ifc_out32(savd_gregs->ddr_ccr_low, &fcm->ddr_ccr_low);
+ ifc_out32(savd_gregs->cm_evter_en, &fcm->cm_evter_en);
+ }
+
+ if (ctrl->saved_rregs) {
+ /* IFC controller NAND machine registers */
+ ifc_out32(savd_rregs->ifc_nand.ncfgr,
+ &runtime->ifc_nand.ncfgr);
+ ifc_out32(savd_rregs->ifc_nand.nand_fcr0,
+ &runtime->ifc_nand.nand_fcr0);
+ ifc_out32(savd_rregs->ifc_nand.nand_fcr1,
+ &runtime->ifc_nand.nand_fcr1);
+ ifc_out32(savd_rregs->ifc_nand.row0, &runtime->ifc_nand.row0);
+ ifc_out32(savd_rregs->ifc_nand.row1, &runtime->ifc_nand.row1);
+ ifc_out32(savd_rregs->ifc_nand.col0, &runtime->ifc_nand.col0);
+ ifc_out32(savd_rregs->ifc_nand.col1, &runtime->ifc_nand.col1);
+ ifc_out32(savd_rregs->ifc_nand.row2, &runtime->ifc_nand.row2);
+ ifc_out32(savd_rregs->ifc_nand.col2, &runtime->ifc_nand.col2);
+ ifc_out32(savd_rregs->ifc_nand.row3, &runtime->ifc_nand.row3);
+ ifc_out32(savd_rregs->ifc_nand.col3, &runtime->ifc_nand.col3);
+ ifc_out32(savd_rregs->ifc_nand.nand_fbcr,
+ &runtime->ifc_nand.nand_fbcr);
+ ifc_out32(savd_rregs->ifc_nand.nand_fir0,
+ &runtime->ifc_nand.nand_fir0);
+ ifc_out32(savd_rregs->ifc_nand.nand_fir1,
+ &runtime->ifc_nand.nand_fir1);
+ ifc_out32(savd_rregs->ifc_nand.nand_fir2,
+ &runtime->ifc_nand.nand_fir2);
+ ifc_out32(savd_rregs->ifc_nand.nand_csel,
+ &runtime->ifc_nand.nand_csel);
+ ifc_out32(savd_rregs->ifc_nand.nandseq_strt,
+ &runtime->ifc_nand.nandseq_strt);
+ ifc_out32(savd_rregs->ifc_nand.nand_evter_en,
+ &runtime->ifc_nand.nand_evter_en);
+ ifc_out32(savd_rregs->ifc_nand.nanndcr,
+ &runtime->ifc_nand.nanndcr);
+ ifc_out32(savd_rregs->ifc_nand.nand_dll_lowcfg0,
+ &runtime->ifc_nand.nand_dll_lowcfg0);
+ ifc_out32(savd_rregs->ifc_nand.nand_dll_lowcfg1,
+ &runtime->ifc_nand.nand_dll_lowcfg1);
+
+ /* IFC controller NOR machine registers */
+ ifc_out32(savd_rregs->ifc_nor.nor_evter_en,
+ &runtime->ifc_nor.nor_evter_en);
+ ifc_out32(savd_rregs->ifc_nor.norcr, &runtime->ifc_nor.norcr);
+
+ /* IFC controller GPCM Machine registers */
+ ifc_out32(savd_rregs->ifc_gpcm.gpcm_evter_en,
+ &runtime->ifc_gpcm.gpcm_evter_en);
+
+ /* IFC interrupts enabled */
+ ifc_out32(ctrl->saved_gregs->cm_evter_intr_en,
+ &fcm->cm_evter_intr_en);
+ ifc_out32(ctrl->saved_rregs->ifc_nand.nand_evter_intr_en,
+ &runtime->ifc_nand.nand_evter_intr_en);
+ ifc_out32(ctrl->saved_rregs->ifc_nor.nor_evter_intr_en,
+ &runtime->ifc_nor.nor_evter_intr_en);
+ ifc_out32(ctrl->saved_rregs->ifc_gpcm.gpcm_evter_intr_en,
+ &runtime->ifc_gpcm.gpcm_evter_intr_en);
+
+ kfree(ctrl->saved_gregs);
+ kfree(ctrl->saved_rregs);
+ ctrl->saved_gregs = NULL;
+ ctrl->saved_rregs = NULL;
+ }
+
+ ver = ifc_in32(&fcm->ifc_rev);
+ ncfgr = ifc_in32(&runtime->ifc_nand.ncfgr);
+ if (ver >= FSL_IFC_V1_3_0) {
+
+ ifc_out32(ncfgr | IFC_NAND_SRAM_INIT_EN,
+ &runtime->ifc_nand.ncfgr);
+ /* wait for SRAM_INIT bit to be clear or timeout */
+ timeout = 10;
+ while ((ifc_in32(&runtime->ifc_nand.ncfgr) &
+ IFC_NAND_SRAM_INIT_EN) && timeout) {
+ mdelay(IFC_TIMEOUT_MSECS);
+ timeout--;
+ }
+
+ if (!timeout)
+ dev_err(ctrl->dev, "Timeout waiting for IFC SRAM INIT");
+ }
+
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
static const struct of_device_id fsl_ifc_match[] = {
{
.compatible = "fsl,ifc",
@@ -318,10 +576,15 @@ static const struct of_device_id fsl_ifc
{},
};
+static const struct dev_pm_ops ifc_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(fsl_ifc_suspend, fsl_ifc_resume)
+};
+
static struct platform_driver fsl_ifc_ctrl_driver = {
.driver = {
.name = "fsl-ifc",
.of_match_table = fsl_ifc_match,
+ .pm = &ifc_pm_ops,
},
.probe = fsl_ifc_ctrl_probe,
.remove = fsl_ifc_ctrl_remove,
--- a/drivers/mtd/maps/physmap_of_core.c
+++ b/drivers/mtd/maps/physmap_of_core.c
@@ -20,6 +20,7 @@
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/concat.h>
+#include <linux/mtd/cfi_endian.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
@@ -205,6 +206,9 @@ static int of_flash_probe(struct platfor
info->list[i].map.bankwidth = be32_to_cpup(width);
info->list[i].map.device_node = dp;
+ if (of_property_read_bool(dp->parent, "big-endian"))
+ info->list[i].map.swap = CFI_BIG_ENDIAN;
+
err = of_flash_probe_gemini(dev, dp, &info->list[i].map);
if (err)
goto err_out;
--- a/include/linux/fsl_ifc.h
+++ b/include/linux/fsl_ifc.h
@@ -274,6 +274,8 @@
*/
/* Auto Boot Mode */
#define IFC_NAND_NCFGR_BOOT 0x80000000
+/* SRAM INIT EN */
+#define IFC_NAND_SRAM_INIT_EN 0x20000000
/* Addressing Mode-ROW0+n/COL0 */
#define IFC_NAND_NCFGR_ADDR_MODE_RC0 0x00000000
/* Addressing Mode-ROW0+n/COL0+n */
@@ -857,6 +859,11 @@ struct fsl_ifc_ctrl {
u32 nand_stat;
wait_queue_head_t nand_wait;
bool little_endian;
+#ifdef CONFIG_PM_SLEEP
+ /*save regs when system goes to deep sleep*/
+ struct fsl_ifc_global *saved_gregs;
+ struct fsl_ifc_runtime *saved_rregs;
+#endif
};
extern struct fsl_ifc_ctrl *fsl_ifc_ctrl_dev;